执行结果截图:
代码:
public class TernaryOperator { public static void main(String[] args) { int a = 10; int b = 20; a+=b; //a = a+b a-=b; //a = a-b System.out.println(a); //字符串连接符 System.out.println(a+b); System.out.println(""+a+b); // 如果前面是字符串,后面的a和b都会自动转换为字符串,不会计算 System.out.println(a+b+""); // 如果后面跟字符串,前面的a和b不会自动转换字符串,会计算 boolean x = true; String y = "ok"; String z = "not ok"; //?:是三目运算符,如果x==true,则结果为y,否则结果为z System.out.println(x?y:z); System.out.println(!x?y:z); int score = 80; String type = score < 60 ? "failing grade":"passing grade"; System.out.println(type); score = 50; type = score < 60 ? "failing grade":"passing grade"; System.out.println(type); } }